Terri,

I too had problems and wrote A practical guide to getting z/OSMF working
<https://colinpaice.blog/2020/12/21/a-practical-guide-to-getting-z-osmf-working/>
it mentions certificates.

It sounds like someone is trying to connect to your server.   The CAs for
this user are not in the server's keyring.

Can you list your client's certificate and see the CA's for the client cert?

on z try
RACDCERT LISTRING(IZUKeyring.IZUDFLT ID(IZUSVR)
to see what is in RACF.

What are you using on your client  - browser or python etc?

regards

Colin

On Fri, 13 Aug 2021 at 13:59, Shaffer, Terri <
[email protected]> wrote:

> So I am no expert when it comes to certificates,  So maybe someone can
> shed some light for me.
>
> By default z/OSMF is configured with a CA   or ZOSMFCA label.   That
> doesn't work or maybe seem to work for me. I can generate a client
> certificate from it and download to me PC but will never establish an SSL
> TLS 1.2 connection.  I also done have admin rights, so even if I could it
> would only be for me, at least I think.
>
> So my corporate network team, gave me a root and immediate CA and then
> generated a client certificate for me.
>
> I imported them to RACF as trusted and built my z/OSMF key ring off those,
> which seemed to work...
>
> However now I am getting
>
> [ERROR   ] CWPKI0022E: SSL HANDSHAKE FAILURE:  A signer with SubjectDN
> CN=xxx.xxx.xxx.xxx my IP
> The signer might need to be added to local trust store
> safkeyringhybrid://IZUSVR/IZUKeyring.IZUDFLT, located in SSL configuration
> alias izuSSLConfig.
> The extended error message from the SSL handshake exception is: PKIX path
> building failed: com.ibm.security.cert.IBMCertPathBuilderException: unable
> to find valid certification path to requested target.
>
> Which I guess makes sense because my network team gave me all the Certs.
> But is there a way to resolve this so all users get a TLS 1.2 htps
> connection?
>
> Ms Terri E Shaffer
> Senior Systems Engineer,
> z/OS Support:
> ACIWorldwide - Telecommuter
> H(412-766-2697) C(412-519-2592)
> [email protected]
>
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